I've installed flash v11.7.700.202 on a Windows 7 (Ultimate) x64 box with plenty of disk, RAM, etc. The CPUx are idle.
This is a problem with Firefox v20+ (e.g. 20.1, 21) and Flash v11+
Firefox v18.x & Flash v10.8 worked.
Amazon instant video works with IE v10 & Flash v11.7, the encrypted video link below, IE only provides a download option, not an inline execution ability (downloaded video works fine using a DivX player).
I've also installed v11.7 from the offline installer (after first uninstalling the online installer version) from:
Received message is that I've installed successfully (from install_flashplayer11x32_mssd_aih.exe)
Troubleshooting, I see that I've install successfully from Adobe's site:
I can play UN-encrypted video from:
I cannot play encrypted video (from Amazon) or from Adobe:
No Event Log warnings or errors were made.
How does one go about debugging this problem or should I just use Silverlight?
I am not sure I will be able to answer your question, but can you be a little bit more specifc what "cannot" means?